[Etoys] Performance improvements form 3.9 (backported) #3

[Marcus Denker]

Here's the last batch of performance changes backported from 3.9.

These seem to not give too much of a performance boost, but they
should not hurt either.

"Change Set:		RemoveFlag-md
Date:			16 October 2006
Author:			Marcus Denker

This just removed a
	self flag: #bob

from WorldState>>doOneCycleNowFor:. There are other calls to #flag  
done in the
main rendering loop, these are not fixed with the changeset."


Change Set:		SubMorphCopy-md
Date:			16 October 2006
Author:			Marcus Denker

This is from

Change Set:		MorphicPerformance1-efc
Date:			6 August 2005
Author:			Eddie Cottongim

-Change Morph>>submorphs to be non-copying. This seems to be the  
concensus on the squeak-dev list of the right thing to do. It doesn't  
provide a noticable boost in normal circumstances but with very large  
numbers of morphs it prevents a lot of scaling problems.

I did not include the other changes, as there are clashes with other  
changes in OLPC"

Change Set:		FasterMorphicProperties
Date:			16 October 2006
Author:			Marcus Denker

This changeset optimized Morphic property code for message sends
by not using accessors"!






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